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Infection with gonorrhea also increases the risk of becoming infected with HIV (human immunodeficiency virus, the virus that causes AIDS). In 2000, 358,995 cases of gonorrhea were reported to the U.S. Centers for Disease Control and Prevention (CDC). In the United States, approximately 75 percent of all reported cases of gonorrhea is found in younger persons aged 15 to 29 years. The highest rates of infection are usually found in 15- to 19-year old women and 20- to 24-year-old men. Health economists estimate that the annual cost of gonorrhea and its complications is close to $1.1 billion. The disease can spread into the uterus and Fallopian tubes, resulting in pelvic inflammatory disease (PID). PID affects more than 1 million women in the United States every year and can cause infertility in as many as 10 percent of infected women and tubal (ectopic) pregnancy. Colonies of Arthrobacter have a greenish metallic center on mineral salts pyridone broth incubated at 20°C. This genus is distinctive because of its unusual habit of 'snapping division' in which the outer cell wall ruptures at a joint (hence its name). Microbiologists refer to the type of cell division in which rods break into cocci as reversion. Under the microscope, these dividing cells appear as chevrons ('V' shapes). Other notable characteristics are that it can use pyridone as its sole carbon source, and that its cocci are resistant to desiccation and starvation. Corynebacterium diphtheriae is a pathogenic bacterium that causes diphtheria. Also called the Klebs-Löffler bacillus, because it was discovered in 1884 by German bacteriologists Edwin Klebs (1934-1912) and Friedrich Löffel (1852-1915). Click on following items to see more information: Agrobacterium, Antibiotics, Antibiotic prophylaxis, Antimicrobials, Bacillus, Bacillus subtilis, Bacteria, Microbiological, Bacteriophages, Bacteroides, Botulin, Candida albicans, Cell suspensions, Clostridia, Culture medium, Escherichia coli, Escherichia coli, Escherichia coli, Escherichia coli, Escherichia coli, Enterobacteriacea, Fermentations, Yeasts, Gram negative, Haemophilus, Lactococci, Microorganisms, Microbial, Microorganisms, Neisseria, Pichia, Pseudomonas aeruginosa, Ps. putida, S. cerevisiae, S. cerevisiae, Salmonella typhimurium, Sepsis, Staphylococcus aureus, Streptococci, Streptococcal, Thermophiles, Yeasts The fruits of this basic research have been used by scientists to understand microbial activity and therefore to shape our modern world. Human proteins, especially hormones like insulin and human growth factor, are now produced in bacteria using genetic engineering. Our understanding of the immune system was developed using microbes as tools. Microorganisms also play a role in treating disease and keeping people healthy. Many of the drugs available to treat infectious disease originate from bacteria and fungi. In 1943 Beadle and Tatum reported experiments with the fungus Neuropsora crassa that eventually established the idea that each gene in the DNA typically codes one protein (the one gene-one enzyme hypothesis). About 10 years later, James Watson and Francis Crick wrote their landmark letter to the journal Nature describing the structure of DNA and making predictions about how it was replicated. It was now clear that DNA stored the information for proteins and that proteins performed the many functions of the cell. The important question now became, how does one convert the information in DNA into protein.
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